Companion Animal Welfare

Cat FeLV and FIV Management

Feline leukemia virus and feline immunodeficiency virus are the most significant infectious viral diseases affecting outdoor cats' long-term welfare.

Key Facts

FeLV is transmitted through close contact including mutual grooming and shared feeding
FIV is transmitted primarily through bite wounds from infected cats
Both viruses cause immunosuppression increasing susceptibility to secondary infections
FeLV-positive cats have shorter prognosis than FIV-positive cats who can live for years
Indoor lifestyle and neutering reduce transmission risk for both viruses

Welfare Considerations

FeLV and FIV cause extended welfare compromise through immune failure and secondary disease. Prevention through vaccination (FeLV), testing of new cats, and reducing bite wound exposure (FIV) is the most welfare-positive approach.

What You Can Do

Vaccinate outdoor cats against FeLV and test all new cats before introduction
Keep FeLV-positive cats indoors to prevent further transmission
Work with your vet to manage secondary infections and maintain quality of life in positive cats